The trains will be delivered between May 2014 and June 2015, and 20 will be used on Line 1 with the remaining 10 entering service on Line 2.

AnsaldoBreda beat off competition from Hyundai Rotem and CAF for the contract, which includes an option for an additional 30 trains.

The new trains will be a development of the Meneghino emu designed by AnsaldoBreda specifically for ATM.